Electric-lamp socket



- 1,643,790 Sept 27,1927 H E SLADE ELECTRIC LAMP SOCKET 'Filed Dec. v,192s Mmmmlm l INVENTOR kwa/ZZ ,/dfle ATTO NE-YS y the manufacture 25connected to the Patented Sept. 27, v1927.

UNITED STAT lasv PATENT oFFIcE.

HAROLD E. SLAEE, OF NEWARK, NEW JERSEY, ASSGNOR T0 BEAVER MACHINE &;TOOL COMPANY, INC., 0F NEWARK, NEW JERSEY, A CORPORATION 0F NEW JERSEY.

ELECTRIC-LAMP SOCKET.

Application filed December This invention relates to an electric lampsocket and more particularly to the keyless type of electric lampsocket. Heretofore, lso far as I am aware, it has been customary in ofkeyless 'electric lampA sockets to connect the screw thread terminal andinmany structuresalso the center terminal to the base of the lamp socketby screws or bolts which pass into or lon- 10 gitudinally through thebase of the socket. The -parts of the socket involved in thisconstruction are attached to the base with more or less difficulty aswell as being unnecessarily numerous. One` of the objects of myinvention, therefore, is to overcome this difculty by simplifying theconstruction as well as the manner of assembling and connecting thepartsl byaproviding a screw socket terminal adaptedin part at least tospana-portion of the socket base and to be connected thereto by a memberpassing transversely through (che fbase.; The construction is. also suchthat one of the line terminals .and the center contact are also base bya memberntransf. vversely assoclated with the base. In the constructionof heretofore manufactured, various means have been employed forattaching the 4cap to the shell so as to be readily removable therefromand to prevent the base andvparts t associated therewith from turningrelativel ly to the shell and its cap. The present invention alsoincludes a simplified structure for accomplishing this purpose whichIstructure includes suitable apertures provided in the peripheral portionof the cap adapted to be engaged by bosses provided for this purpose onthe 4o shell together with a notch in the edge of the shell adapted toreceive a lug on the casing to prevent a relative turning movement be-`tween these parts, the said notch beingcontinued in the shell in theform of a centrally'- disposed slot of sufficient extent to provide therequired resiliency in the end of the shell for compressing the same inseparating the captherefrom. Thesel and other features of my improvedkeyless socket will 1 5o. be hereinafter more particularly described.

Y In the drawing.

Fig. 1 vis an elevation of my improved part each adapted to vings 12tosecure Also as illustrated the cap may be y keyless lamp sockets, asl

peripheral portion of the* 7, 1923. Serial N0. 679,051.

keyless' electric lamp socket 'illustrating a of the cover or cap brokenaway to show the formation of the notch and slot in theshell. r Fig. 2is an 'elevation of the base and parts associated therewith.

3 is an enlarged central longitudinal section.

` Fig. L is a plan ofthe socket with the cap removed, and

F ig. 5 is an inverted-plan with the shell removed. 4 lReferring' to themade in accordance with this inventionk includes the usual shell 10 andthe cap member 11 adapted to fit over one` end ofthe shell to beconnected thereto. As illustrated, the cap 11 is providedv with a seriesof spaced apertures 12 which are preferably semi-circular andtheperipheral portion of the shell at one end thereof a correspondingnumber of bosses13; each' is -provided with .x

of which is preferably 'semi-spherical and 4made of any suitablematerialforthe purposes intended. The shell is adapted to receive abaseand the electrical conducting members associated therewith ashereinafter described` and at the cap end of the shell l-a notch 17 isiprovided in the periphery thereof to 'receive alug, 'as hereinafterdescribed, on the base member to prevent the relative rotation of theseparts. The peripheral portion of the shell is cut away in asubstantially rectangular configuration to provide the notch 17. Attheinner end of the notch the same includes recesses 18 eX- tendingcircumferentially of the shell and the notch also includes a centrallydisposed preferably gitudinally of 'the shell a vsuiiicient` distance tomake they adjacent portions of the Ashell resilient enough to becompressed to readily eeot the removal of the cap when this is necessaryor desirable, it .being understood V-shaped slot 19 extending lon i 65drawings, the socket that when the parts are in position the pe-vripheral portion of the cap is vprevented fromparticipating in thisresilient action throughfthe lug on the base, as hereinafter described.Furthermore the edge portionsv of the'shell atl the notchedendthereof'are inturned to provide ears indicated at and 21 and thecorresponding portions of the insulating. lining with ears ,22 and 23for engagihg the sides of the lug on' the base. w

The base of the lamp socketis indicated at`24 and as'isl customary thisis made of porcelain or. anyother similar and equally goodinsulatingmaterial. The base isfitvted with a screw' socket terminal 25adapted to receive the screw terminal ofalamp bulb and provided withoppositely disposed longitudinally extending lugs 26 and 27 adaptkedrespectively to` be received in and to lie which is' indicated at 30and'is fitte'dwithY transversely through' a bore provided for.

' openingv in the lead wire terminal .against the bases of the recessesor grooves 28 and 29.l provided therefor inopposite positions-in thebase 24. TheA socket is also provided with lead wire terminals,.one 0fva binding screw 31 adaptedt engagea lead wire to secure the same inposition against the terminal 30. Also as illustrated fthe-terminal .30lies in the recess 29 and is 'e provided with a boss 'adapted to be'received '27. Av tie-bolt 33 passes through an openin anvopeninglprovided therefor in the lug ing providedther'efor in the lug26, passes this purpose in the base 24 .and Vat its opposite end is4threaded to engage artapped 30 to secure these-partstogether.

, v-Thecentral Contact of the socket is indi-' cated at 34.'l Thisismade integral with a lead wire terminal 35. which passes through anopening- 36 provided in the wallsof the screw socket 'contacty25 forthis purpose so"l that the -central'contact 34may assume a centralposition. relatively tol the screw lsocket contact'andthe base.y Theother end ofthe lead wire terminal 35 lies in a recess 37 provided in.the sideof the base 'for this purpose, the1 recess. 37 being separatedfrom terminal. This lead wire-terminal 35 isl secured .in position,being connected to the base 24 by av tie-bolt 41, .the head ofwhichliesin a recess '42 while the shank extends through a transverselbore provided in the'- base'24 for this purpose .in order to permit-the' screw nthreadedy end'vof the tie-bolt to engage a-.tapped'openingin the lead wire 4terminal by which engagemend' as will be understood,ythe'leadfwire terminal ismaintained in position.

' A 'sclearly seen lin-Fig.. 5 thescrew socket contact 25 is -providedwith an inturned end portion 43vadapted to lie against the inner end ofthe base 24 and is notched to engage the sides of a lug 44 projectingfrom the inner end of the base 'in order, to assist in lmantaining therelative positions of these parts and for the t'same purpose'on theopposite side the screw socket contact 25 is provided with 'an'in'turned end 45, the edges of which are adapted to engage alug 46 atdistant from the notch 17, thebase 24 is provided with a rib 47. in theupper or outer end of which thereisa lug 48 adapted to extend throughand" to lie within the notch 17 to prevent'a rotary shifting of the.base and its associated parts relatively to the shell. The vperipheralportions of the base 24 adjacent'the rib '27. are' preferably flattenedfaces as indicated at 49' and, 50

for' the purpose of providing said rib and;

,effecting an economy in the `use of the material from whichthe base ismade. Similarly lo nl the opposite side of the base there is a -rib 51which, however; is not provided with acorresponding lug, but-on eitherside of. which the base has flattened faces 52 and 53., while adjacenttheflattened face 53 there is a flattened face 54 along'w-hichthelongitudinall portion of. the vlead wire terminal 35 extends y y-Fromthe foregoing description it will be understood that the numberofpartsof the `socket is reduced' to a'minimum and .the

facility with which the parts may be assembled is increased by making itpossiblev to pass the tie-bolt transversely through the base to securethe terminal and contact members in position,while the shell and baseare maintained in their relative `places and the lshell is lmadesufhciently resilient to permit of the ready removal lof the .capby-beinfr.

'. depressible on either side ofthe lug which,

when the' parts are in place, maintains the peripheralportion of the capin position by I Claim asI my invention: 1. In an ,electric lamplsocket, an

provided" therefor onthe said base, a lead to enter arecess 'providedltherefor in vone iof the said lugs, land. a unitary meanspasspreventing vthe samel fromy being depressed.l a

insulat- 4 ing base', a lamp terminal screw contact havlng lugsextending therefrom adapted to eny vgage substantially oppositelyAdisposed faces 126 `wireterminal having a bossv thereon adapted I ingthrough the safid'base transversely, and

engaging-one of the said lugs to secure the said lamp terminal 'screwcontact to said base, and/also engaging the said lead-wire terminal tosecure the same andthe other of the. said lugs to thesaid base.'`

2.v In an electric' lamp socket,. an2 insulatbase, and also engaging theterminal to secure the same and the other of ing base, a lamp terminalscrew contact having lugs extending therefrom adapted to engagesubstantially oppositely` disposed faces provided therefor on the saidbase, a

lead wire terminal having a boss thereon.

l the said lugs tofthe said base, a lamp termil gaging the saidextension to fix the for on the said base,

nal center contact Ahaving an extension adapted tovlie against a faceprovided thereand means also passing transversely through the said basefor en'- ing base', `ing lugs extending therefrom adapted to ensame andthe said lamp terminal 'center' contact thereto. y

3. In an electric lamp socket, an insulata lamp terminal screw contacthavgage substantially oppositely disposed faces provided therefor on thesaid base, a lead wire terminal adapted to contact with one of the saidlugs of the lamp terminal screw contact, and a unitary means passing.through said base transversely and engaging oneof the lugs to securethe said lamp terminal screw contact to said base and also engaging the`same lead wire terminal to secure ,the same and the other of the saidlugs to the said base.

Signed by me this 20th day'of Sept., 1923. HAROLD E. SLADE.

